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IC Engines and Nuclear Power Plants problems

  • 1. The correct mixture strength (by weight) for petrol is about

  • Options
  • A. 14.6:1
  • B. 18.5:1
  • C. 20.4:1
  • D. 22.6:1
    • Discuss
  • 2. A petrol engine, during suction stroke draws

  • Options
  • A. air only
  • B. petrol only
  • C. a mixture of petrol and air
    • Discuss
  • 3. A moderator

  • Options
  • A. absorbs neutrons
  • B. does not absorb neutrons
  • C. accelerates neutrons
  • D. none of these
    • Discuss
  • 4. A turbo-jet does not require a turbine to drive the compressor.

  • Options
  • A. True
  • B. False
    • Discuss
  • 5. For the same maximum pressure and heat input, the exhaust temperature of petrol engine is __________ than that of diesel engine.

  • Options
  • A. less
  • B. more
    • Discuss
  • 6. A supercharged engine as compared to an ordinary engine

  • Options
  • A. requires smaller foundation
  • B. is lighter
  • C. consumes less lubricating oil
  • D. all of these
    • Discuss
  • 7. The ratio of the brake power to the indicated power is called

  • Options
  • A. mechanical efficiency
  • B. overall efficiency
  • C. indicated thermal efficiency
  • D. volumetric efficiency
    • Discuss
  • 8. The frictional power (F.P.) is given by

  • Options
  • A. F.P. = B.P. - I.P.
  • B. F.P. = I.P. - B.P.
  • C. F.P. = B.P./I.P.
  • D. F.P. = I.P./B.P.
    • Discuss
  • 9. If V1 is the jet velocity and V0 is the vehicle velocity, then the propulsive efficiency of a rocket is given by

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 10. The theoretically correct mixture of air and petrol is

  • Options
  • A. 10:1
  • B. 15:1
  • C. 20:1
  • D. 25:1
    • Discuss

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